

MCQOPTIONS
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1. |
Nitrogen is not taken up by plants in _______ form. |
A. | N<sub>2</sub> |
B. | NO<sub>3</sub><sup> </sup> |
C. | NO<sub>2</sub><sup> </sup> |
D. | NH<sub>4</sub><sup>+</sup> |
Answer» B. NO<sub>3</sub><sup> </sup> | |